Apparatus for circulating the liquid in plating-tanks.



G. L. WALLACE. w APPARATUS FOR URGUL'ATING, THB LIQUID IN PLATIN@ TANKS.

Patented Mar. 1,1910.

AP'LICATION `FILED MAY 15,1909.

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2 SHEETS-SHEET l.

[1W @Hummm G. L. WALLACE. Y APPARATUS FOR GIRCULATING THE LIQUID IN PLATING TANKS.

l APPLICATION FILED MAY 15,1909.

, 9599973 Patentd Mar. 1, 1910.

2 SHEETS-SHEET 2.

Hoz nalin lating medium one or more pumps of an j clhcient and practical design which may hc GEORGE L. WALLACE, or enrnenronr, ooimnoreu'r.

APPARATUS FOB CIR'CULATIN-t THE LIQUID IN PLATING-TANKS:

95eme.

Specication of Letters SPa/tent.

Patented Mar. 1, 1910.

' -Application led May 15, 1909. Serial No. 496,312.

the strength' and quality of thesame remaining uniform throughout.

Itis the purpose of the device to produce. means for continually circulating 'and agitating all sorts'offplating solutions in tanks of this sort by drawing the same oft from the top and injecting it .into the bottom; to so construct "and arrange the pipe4 eounec` tions through which the solution is passed that the same will be deflected toward the anodes when injected into said tank; to provide means which will permit of several tanks being connected in series and the so- .lution therein circulated through a single medium and-finally to employ as such circuconnected up foreither a single tank or a series as preferred.

Upon the accompanying tivo sheets of drawing forming a part of this specitication siniilar characters of reference are usedto denote likeor corresponding parts throughout the several figures, and of which.'

Figure l. shows a plating tank provided with my improved means for circulating and agitating the solution. Fig. 2,'is a vertical cross section of A Fig. l, and Fig. 3, shows a plan View of a series of tanks connected up with my improved circulatinrineans. n

Referring in detail to the characters of reference marked-upon the drawings 5 indicates a tank forlcontnining the liquid a composing the electrolytie bath to be circulated, and lwhich may be of any suitable or preferred construction. p

7 represents the anode supports arranged upon the tank and 6 the :modes hung from said supports.

8 represents cathode rods upon which the work 8 is suspended as in the usual or any preferred Way.'

The numberjand slze of anodcs is op- St-ates, 'and resident of perspective view of a -suited to the particular class of plating de-v sired.

The tank'would he filled with u properlyproportioned and mixed depositing solution made in acmrd-with the particular class of work to be performed. The means and connections for circulating this solution as will next be described is construct-ed with a View of In..iintaining a uniform quality of solution throughout all parts of the tank and avoiding any portion thereof from becoming stagnant or idle and whereby theheavier and acid portions of the solution continually more7 thereby insuring its thorough mixture throughout the whole bodyof the liquid. 'lheconnections and apparatus for accomplishing this agit-ation comprises one ormore pairs of pipes 9 9 for each tank which are extended over and into the top portion of the tank to 'a depth required to draw off the top portion of the solution. These pipes are connected with one or more plunger pumps charged into the tank alternately. Whenpumps are arranged in pairs they are pref# erahly set to operate alternately, that is t'o say one is drawing in while the other is forcing out. Pipes 13 are connected to the opposite valve chamber of the pumpsl 107 that in turn arecarried up over and down into the bottom portion of the tank where-cach is connected with a longitudinal perforated pipe let that extends through the hot-tour portion of the tank and serves to deliver there the solution pumped olf from the top Vand sent down through the pipes 13. These of the anodes before mentioned and the perforations are placed in their upper side portions so as to insure the jets when forced therefrom to be deflected at various angles to insure an intimate contact of jets of solution with adjacent sides of and over the entire face of said anodes from bottom to top. The force of t-he jets of solution turns upon reaching the top portion of the main body of solution and circulates downward over the cathode surface withsnicientvforee to '100 perforated pipes are uarranged intermediate' In Fig. 3, I have shown a diagram of a sei ries of tanks each of which are connected sary at a Asimilarly employer substantially the same as the other pipe connections 9 shown in Figs. l and 2, and to be operated hy one or more pumps 15 driven from a sin le shaft 11 and mounted if neces dis-tant point from the tanks. In connecting up a series of tanks in this manner it will be obvious of course that .we must use twolong runs of pipes 1G intermediate of the intake pipe 13 and the pumps and further that itis desirable to employ in the said pip'es 1,3, a valve 17 whereby the suction of the solution may be regulated. lt will also he noted that lon 'er runs ot' pipes 18 are iintermediate of the said pump 10 and the perforated delivery pipes 14 and whereby the service pipes and tanks are connected to be o era-ted simultaneously. Having thus deseri ed my invention `what l desire to secure by Letters Patent is t* l. .-'Xn ap aratus for circulating the liquid iu eleetrop ating tanks comprising a tank, anodes .supported therein, pumps having pipe connections 'with tho top portion of the tank, a delivery pipe also connected with said pumps and extending longitudinally through the bottom portion of the tank and ported thereon having pipe con11ectionsWith I top portion of the tank, a pair of pumps set to operate alternately so that one is drawing in the solution from the top portion of the tank while the other is discharging in the bottom portion, a delivery pipe for said discharge connected with each of said pumps and extending through the bottoni ofthe tank between and parallel with the rows of anodes the top side portions of said pipes being' perforated to direct jets of solution against the sides of the anodes aintbaek upon the cathodes.

Signed at Bridgeport, in the county ot Fairfield, and 'State of Connecticut,tliis 12th day of May, A. D. 1909. 4

. `GEORGE L. VLTJACE. Vlfitnesses C. M. NEWMAN, RUTH RAYMOND. 

